The best I can say about the species is it was a Goby. A fish friend needed to reduce their stock and I agreed to accept a few white clouds, some tetras and the Goby as well as some blue shrimp. I never got the name of the exact species and I shot the pics to try and find out the species but never did. Those pictures were shot a number of years ago.
I still have a couple of the white clouds and a lot of shrimp but the Goby was lost after about a year. I came home Friday evening from my fish club meeting with a bag of 10 white clouds and a bag with 5 small albino corys. But I also sold a proven pair of albino ancistrus (he LF she reg. fin) and 6 of their kids. The dad was sold in his cave on new wigglers. I also sold a huge anubias ad two bags each of assassin snails.
So I am about to close another tank which is now empty of fish or snails.